TRAM RTAA Manuals

Manuals and User Guides for TRAM RTAA. We have 1 TRAM RTAA manual available for free PDF download: General Service Bulletin

TRAM RTAA General Service Bulletin

TRAM RTAA General Service Bulletin (84 pages)

Air-Cooled Chiller Control Panel

Brand: TRAM | Category: Control Panel | Size: 11 MB

Table of Contents

Table of Contents
4
Overview
7
General
7
Service Philosophy
7
System Description
7
Figure 1
8
Full System UCM for a 400 Ton Chiller
8
Module Interchanging
9
Phase 1 Units
9
Phase 2 Units
9
System Level Components
9
Description
13
Interprocessor Communication (IPC)
13
IPC Diagnostics
13
Troubleshooting Modules Using IPC Diagnostics
15
Figure 2
16
IPC Link Order for 400 Ton RTAA
16
Figure 3
17
Module Fuse and Power Connection
17
IPC Jumper for Bypassing Modules
17
Troubleshooting Procedure
18
Temperature Sensor Checkout
19
General
19
Temperature Sensor Checkout Procedure
19
Operation of Compressor Starting/Stopping, Anti-Cycle Timing and Restart Inhibit Timer
25
Restart Inhibit Timer
25
Compressor Start/Stop Strategy for Normal Start and Shutdown
27
Condenser Fan Control Operation Via Microprocessor
29
Fan Staging
29
Fans Per Compressor
29
Current Transformer and Current Input Checkout
31
General
31
CT and MCSP Compressor Current Input Checkout Procedure
32
Under-Over Voltage Transformer
39
General
39
Under-Over Voltage Transformer Checkout
39
Compressor Slide Valve
41
Checkout Procedure
41
General
41
Checkout Procedure for MCSP Load/Unload Outputs
41
Checkout Procedure for Slide Valve and Load/Unload Solenoids
42
Setup
42
Load
43
Unload
45
Module Power and Miscellaneous I/O
47
General
47
Power Supply
47
Chiller Module (CPM) (1U1)
48
Vaccum Flourescent Display
48
Display Up/Down Keys
48
Set Point Up-Down Keys
48
Chiller Switch
48
Test Points
49
I/O Terminals
51
Options Module (CSR) (1U2)
53
Test Points 53 --Switch
53
External Setpoint Inputs
53
10Vdc)
53
Setpoint Priority
55
ICS Communications
58
I/O Terminals
58
Electronic Expansion Valve Module (EXV) (1U3 and 1U8)
61
Valve Operation
61
Electronic Expansion Valve Location
62
Test Points
63
63 -EXV Test
63
EXV Test Procedure
63
Electrical Integrity Test
63
Stroke Timing Test
64
EXV Valve Winding Resistance Check
64
Solder Techniques for Installation
66
Electronic Expansion Valve Servicing
66
Compressor Module (MCSP) (1U4, 1U5, 1U6, and 1U7)
73
Test Points
73
IPC Address Switch SW1
73
Current Gain (or Overload) Dip Switch
73
Binary Inputs
74
Temperature Inputs
75
Current Inputs
76
Isolated Binary Input: Winding Temperature
77
Relay Outputs
77
Triac Outputs
77
I/O Terminals
77
Other Service Features
81
Service Pumpdown
81
Service Pumpdown Procedure
81
Compressor Test
82
Invoking Compressor Test
82
Circuit Lockout
82
Invoking Circuit Lockout
82
Circuit Diagnostic Reset
82
Invoking Circuit Diagnostic Reset
82

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